The ornamental design for a boxservingtray, as shown and described.
FIG. 1 is an exploded perspective drawing showing left side and top views of my new design for a box serving tray and wherein an unclaimed die cut box piece is shown in dashed line.
FIG. 2 is a perspective drawing showing rear and bottom views of my new design for a box serving tray.
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front view thereof, the rear view being a mirror image;
FIG. 6 is a right side view thereof, the left side view being a mirror image; and,
FIG. 7 is a top view thereof shown in an unfolded alternate position.
The matter shown in broken center lines depict scribe lines to die cut slits in the box material for removable box pieces or fold lines and form a part of the claimed design. The broken dashed lines showing the cup and the removed circular die cut box piece in FIG. 1 depict environmental subject matter only and form no part of the claimed design. The broken dashed lines showing an aperture with flaps depict a part of the box serving tray that forms no part of the claimed design.